Griffiths, R. A. (1962). Royal government in the southern counties of the Principality of Wales, 1422-145. University of Bristol.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGriffiths, Ralph Alan. Royal Government in the Southern Counties of the Principality of Wales, 1422-145. England: University of Bristol, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGriffiths, Ralph Alan. Royal Government in the Southern Counties of the Principality of Wales, 1422-145. University of Bristol, 1962.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.